* {
    margin: 0;
    padding: 0;
}

body {
    /* position: relative; */
    background-color: #f3f5f7;
}

li {
    list-style: none;
}

a {
    text-decoration: none;
}

.w {
    width: 1200px;
    margin: 0 auto;
}

.clearfix:before,.clearfix:after{
    content: "";
    display:table;
}
.clearfix:after{
    clear:both;
}
.clearfix{
    *zoom:1;
}

.head {
    height: 42px;
    margin: 30px auto;
}

.head .logo {
    float: left;
    width: 198px;
    height: 42px;
}

.head .nav {
    float: left;
    margin-left:70px;
}

.head .nav ul li {
    float: left;
    margin-left:20px;
}

.head .nav ul li a {
    display: block;
    height: 42px;
    padding: 0 8px;
    line-height: 42px;
    color: #050505;
    font-size: 18px;
}
.head .nav ul li a:hover {
    color: #00a4ff;
    border-bottom: 2px solid #00a4ff;
}

.head .search {
    float: left;
    width: 412px;
    margin-left: 70px;
}

.head .search input {
    float: left;
    width: 340px;
    height: 40px;
    padding-left:20px;
    border: 1px solid #00a4ff;
    border-right: none;
    color: #bfbfbf;
    font-size: 14px;
}

.head .search button {
    float: left;
    background-image: url(images/fa-search.png);
    width: 50px;
    height: 42px;
    border: none;
}

.head .user {
    float: left;
    width: 130px;
    height: 42px;
    margin-left:30px;
    background-image: url(images/20130502185029_EkKYh拷贝.png);
    background-repeat: no-repeat;
    background-position: center left;
    background-size: 30px 30px;
}

.head .user a {
    display: block;
    width: 130px;
    height: 42px;
    padding-left: 35px;
    line-height: 42px;
    color: #666666;
    font-size: 14px;
}

.login {
    float: right;
    margin:0 30px;
}

.login ul li {
    float: left;
    height: 42px;
    line-height: 42px;
}

.login ul li a {
    margin: 0 13px;
    color: #050505;
    font-size: 14px;
}

.login ul li p {
    color: #a0a0a0;
}

.content {
    position:relative;
    margin: 0 auto;
    width: 1200px;
}

.banner-box {
    height: 420px;
    background-color: #033db2;
}
.banner-box .banner {
    position: relative;
}

.banner-box .banner .circle img {
    height: 420px;
    width: 1200px;
}

.banner-box .banner .menu {
    position: absolute;
    left: 0;
    width: 190px;
    height: 420px;
    background-color: rgba(0, 0, 0, 0.3);
}

.banner-box .banner .menu ul li a {
    display: block;
    width: 170px;
    height: 45px;
    margin-top: 1px;
    padding-left: 20px;
    line-height: 45px;
    color: #ffffff;
    font-size: 14px;
}
.banner-box .banner .menu ul li a::after {
    content: '>';
    position: absolute;
    right: 20px;
}
.banner-box .banner .menu ul li a:hover {
    color: #00a4ff;
}

.banner-box .banner .schedule {
    position: absolute;
    top: 50px;
    right: 0;
    width: 228px;
    height: 300px;
    background-color: #ffffff;
}

.banner-box .banner .schedule h3 {
    width: 228px;
    height: 48px;
    line-height: 48px;
    text-align: center;
    color: #ffffff;
    font-size: 18px;
    background-color: #9bceea;
}

.banner-box .banner .schedule .course {
    display: block;
    width: 192px;
    height: 45px;
    margin: 0 auto;
    padding: 15px 0 5px;
    border-bottom: 1px solid #eaeaea;
}

.banner-box .banner .schedule .course :hover {
    text-decoration: underline;
}

.banner-box .banner .schedule .course span {
    color: #4e4e4e;
    font-size: 14px;
    font-weight: 700;
}

.banner-box .banner .schedule .course span:nth-child(1) {
    font-size: 16px;
}

.banner-box .banner .schedule .course p {
    color: #a5a5a5;
    font-size: 12px;
}

.banner-box .banner .schedule button{
    display: block;
    margin: 5px auto;
    border:1px solid #00a4ff;
    background-color: #fff;
}

.banner-box .banner .schedule button a {
    display: block;
    width: 198px;
    height: 38px;
    line-height: 38px;
    color: #00a4ff;
    font-size: 16px;
    font-weight: 700;
}

.dots{
    position: absolute;
    bottom: 34px;
    left: 50%;
    margin-left: -108px;

}
.dots ul li {
    float: left;
    width: 20px;
    margin: 0 8px;
}

.dots ul li a {
    display: block;
    width: 12px;
    height: 12px;
    margin: 0 auto;
    border-radius: 6px;
    background-color: rgba(255, 255, 255, .4);
    text-align: center;
}
.dots ul li a:hover {
    background-color: #fff;
}
.dots ul li .selected {
    width: 19px;
    background-color: #fff;
}

.recomand {
    height: 60px;
    margin-top: 8px;
    background-color: #fff;
    box-shadow: 0 2px 3px 0px rgba(118, 118, 118, .3);
}

.recomand ul li {
    float: left;
    margin: 22px 0;
    font-size: 16px;
    border-right: 1px solid #bfbfbf;
}

.recomand ul li h4 {
    padding: 0 23px;
    color: #00a4ff;
} 

.recomand ul li a {
    padding: 0 23px;
    color: #050505;
}

.recomand ul li:last-child{
    border-right:none;
}

.recomand .change a {
    display: block;
    float: right;
    margin: 24px 27px;
    color: #00a4ff;
    font-size: 14px;
}

.rec-course {
    margin-top: 35px;
}

.rec-course h2 {
    color: #494949;
    font-size: 20px;
    font-weight: 400;
}

.rec-course ul li {
    float: left;
}

.rec-course ul li:nth-child(5n) {
    margin-right: 0;
}

.course-card {
    float: left;
    position: relative;
    width: 228px;
    height: 270px;
    background-color: #fff;
}

.course-card div>img {
    width: 228px;
    height: 155px;
}

.course-card .card-text {
    margin: 25px;
    color: #999999;
}

.course-card .card-text p {
    height: 31px;
    margin-bottom: 22px;
    color: #050505;
    font-size: 14px;
}

.course-card .card-text span{
    color: #ff7c2d;
    font-size: 12px; 
    margin-right: 9px;
}

.course-card .card-text span:last-child{
    margin-left: 9px;
    color: #999999;
    font-size: 12px;
}

.box {
    margin-top: 35px;
}

.title h2 {
    float: left;
    color: #494949;
    font-size: 20px;
    font-weight: 400;
}

.title ul {
    width: 540px;
    margin: 0 auto;
    
}

.title ul li {
    float: left;
    margin:0 35px;
}

.title ul li a {
    margin: 0;
    color: #868686;
    font-size: 16px;
    vertical-align: middle;
}

.title ul li a:hover {
    color: #00a4ff;
}

.title a{
    float: right;
    margin-right:32px;
    color: #a5a5a5;
    font-size: 12px;
    vertical-align: top;
}

.lr {
    margin-top: 15px;
}

.lr .left {
    float: left;
    width: 228px;
    height: 392px;
}

.lr .right {
    float: left;
    width: 957px;
    margin-left: 15px;
    height: 100px;
}

.lr .right ul li {
    float: left;
}
.lr .right ul li:last-child {
    margin-right: 0;
}

.qd ul li:last-child {
    margin-right: 0;
}

footer {
    height: 417px;
    margin-top: 40px;
    background-color: #fff;
}

footer .foot {
    padding-top: 33px;
}

footer .foot .foot-content {
    float: left;
    margin-right: 150px;
}

footer .foot .foot-content img {
    width: 195px;
    height: 42px;
}

footer .foot .foot-content p {
    color: #666666;
    font-size: 12px;
    margin-top: 25px;
}

footer .foot .foot-content button {
    margin-top: 15px;
    background-color: #fff;
    border: 1px solid #00a4ff;
} 

footer .foot .foot-content button a {
    display: block;
    width: 120px;
    height: 36px;
    line-height: 36px;
    color: #00a4ff;
    font-size: 16px;
}

.tips {
    float: left;
    margin-left: 90px;
    margin-right: 33px;
    color: #333333;
}

.tips h3{
    font-size: 16px;
}

.tips ul li a {
    color: #333333;
    font-size: 12px;
}

.sub-nav {
    position: absolute;
    top: 10%;
    left: -200px;
    width: 183px;
    height: 425px;
    background-color: #fff;
}

.sub-nav ul li a {
    display: block;
    height: 38px;
    padding-left: 24px;
    line-height: 38px;
    color: #000000;
    font-size: 14px;
}

.sub-nav ul li a:hover{
    color: #00a4ff;
}

.course-card::after {
    content: "";
    display: none;
    position: absolute;
    left: 0;
    top: 0;
    width: 228px;
    height: 155px;
    background: rgba(255, 255, 255, 0.4) url(images/arr.png) no-repeat center;
}

.course-card:hover::after {
    content: "";
    display: block;
}
.rec-course ul li {
    position: relative;
    margin-top: 15px;
    margin-right: 15px;
    background-color: pink
}


.hot::after {
    content: "";
    display: block;
    position: absolute;
    right: -4px;
    top: 4px;
    width: 40px;
    height: 24px;
    background: url("images/new拷贝.png");
}

.new::after {
    content: "";
    display: block;
    position: absolute;
    right: -4px;
    top: 4px;
    width: 40px;
    height: 24px;
    background: url("images/new.png");
}